Method to determine trace amounts of crude oil by spectroscopic absorption
a crude oil and trace amount technology, applied in the field of spectroscopic absorption of crude oil trace amounts, can solve the problems of high cost, complicated equipment and skilled operators, and large drawbacks of methods
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Problems solved by technology
Method used
Image
Examples
example 1
[0039]
Oil-ContainingTotalPortionAbsorptionCorrespondingCalculatedSampleFluid, mlSample, mlRemovedValue at 350 nmAmount, mlAmount, ml% Error10.033.701.000.2370.0089280.0330336+10.1120.094.401.000.5380.0221720.0975568+8.3930.083.701.000.4780.0195320.0722684−9.66
[0040]In Example 1, the sample was a clear oil phase fluid where a known quantity of oil was added to a test tube of water, as depicted in FIG. 3a. Sample 1, the oil-containing fluid was 0.03 ml of Uthmaniyah (UTMN) oil with a density of 0.8720 g / ml at 23° C. in 5 ml. To the sample, a toluene extraction volume was added to create a total sample. In Sample 1, the toluene extraction volume was 3.67 ml of substantially pure toluene to create a total sample of 3.70 ml. The test tube was gently perturbed, the oil was dissolved in the toluene and the oil was extracted resulting in a two-phase solution of an oil-in-toluene layer above an aqueous fluid layer, as depicted in FIG. 3b. No filtration step was performed in this example. A p...
example 2
[0042]
SampleTolueneCalculatedvolume,ExtractionPortionToluene DilutionAbsorptionCorrespondingAmount,SamplemlVolume, mlRemoved, mlVolume, mlValue at 289 nmAmount, mlml1501001.0191.3570.016550.331
[0043]In Example 2, an unknown amount of an oil-containing fluid, a UTMN oil with a density of 0.8720 g / ml at 23° C., as depicted in FIG. 4a, was perturbed, dissolved, and extracted with 100 ml of toluene (toluene extraction volume) to create a two-phase solution of an oil-in-toluene layer and an aqueous fluid layer, as depicted in FIG. 4b. Then, a 1.0 ml portion of the oil-in-toluene layer was removed and further diluted with 19 ml of toluene (toluene dilution volume) to create the dilute sample. The absorption value of the dilute sample was measured using a spectrophotometer at a light wavelength of 289 nm. The absorption value measured was 1.357. For example 2, the correlation between absorption value and the amount of oil as defined by the correlation curve was:
Corresponding Amount of Oil=...
example 3
[0045]
SampleTolueneVolume,ExtractionPortion Removed,DilutionAbsorption atCorrespondingCalculatedSamplemlVolume, mlmlVolume, ml360 nmAmount, mlAmount, mlA100100N / AN / A0.942860.03090.0309B100100140.575150.01860.0928C100100190.35250.01110.1110D100100130.61030.01970.0790E100100N / AN / A0.93660.03070.0307F100100130.83960.02740.1097G1001001190.32040.01000.2005
[0046]In Example 3, a series of samples, representing core samples taken from across a zone in a reservoir field, involving an unknown amount of an oil-containing fluid, a UTMN oil, was perturbed, dissolved, and extracted with 100 ml of toluene (toluene extraction volume). Then, a 1 ml portion of the oil-in-toluene layer was removed and mixed with a toluene extraction volume, if needed. In Samples A and E, the concentration of the oil-in-toluene layer was below 0.1 ml oil in 100 ml toluene based on the sight test, so further dilution was not necessary. In Samples B, C, D, F, and G, the concentration of the oil-in-toluene layer was above ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| wavelength | aaaaa | aaaaa |
| wavelength range | aaaaa | aaaaa |
| light wavelengths | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More